EP2879123A2 - Appareil et procédé pour générer des données de correction et son système de correction de qualité d'image - Google Patents

Appareil et procédé pour générer des données de correction et son système de correction de qualité d'image Download PDF

Info

Publication number
EP2879123A2
EP2879123A2 EP14194920.6A EP14194920A EP2879123A2 EP 2879123 A2 EP2879123 A2 EP 2879123A2 EP 14194920 A EP14194920 A EP 14194920A EP 2879123 A2 EP2879123 A2 EP 2879123A2
Authority
EP
European Patent Office
Prior art keywords
correction
data
correction data
display panel
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP14194920.6A
Other languages
German (de)
English (en)
Other versions
EP2879123A3 (fr
Inventor
Min-Hoon Lee
Sang-Hyoun Kim
Sung-Soo Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020140043722A external-priority patent/KR101561871B1/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP2879123A2 publication Critical patent/EP2879123A2/fr
Publication of EP2879123A3 publication Critical patent/EP2879123A3/fr
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen

Definitions

  • aspects of the exemplary embodiments relate to an apparatus and a method for generating correction data, and an image quality correction system thereof, and more particularly, to an apparatus and a method for generating correction data to correct the non-uniformity of a display panel, and an image quality correction system thereof.
  • a display panel may have non-uniform image quality due to many factors that occur during the manufacturing process. For example, a specific area of the display panel may appear to be brighter or darker than other areas, or the colour temperature of the display panel may be reddish or bluish overall.
  • non-uniformity of image quality may appear only in a specific gradation section or a specific area of the display panel.
  • the non-uniformity in the display panel can be corrected in a limited form with reference only to brightness, or only a predetermined gradation can be corrected.
  • a limited method of correction cannot be applied to a display panel which is provided in various types and colours.
  • a panel for which a correction is applied in a limited manner or conversely, is applied in an excessive manner may occur, thereby affecting productivity of the panel.
  • An aspect of the exemplary embodiments relates to an apparatus and a method of generating correction data to improve non-uniform image quality of a display panel by generating and providing correction data with respect to the non-uniform area of the display panel, and an image quality correction system thereof.
  • a method of generating correction data includes detecting brightness of a display panel of a display apparatus, determining a non-uniform area of the display panel for each red, green, and blue (RGB) colour based on the detected brightness, generating correction data regarding the non-uniform area by determining a screen split size and a correction section for correcting an image quality of the display panel based on the non-uniform area, storing the generated correction data in a storage of the display apparatus, and correcting, by the display apparatus, an image quality of the display panel based on the correction data.
  • RGB red, green, and blue
  • the generating may include determining whether to correct each RGB colour based the non-uniform area determined for each RGB colour.
  • the generating may include, when a correction for a plurality of colours is required, determining a correction section for each colour where the correction is required.
  • the generating may further include calculating a correction value for each correction section based on the determined screen split size and generating correction data including the calculated correction value and correction information, and the correction information may include at least one of the correction section information, the information regarding whether to correct each RGB colour, and the screen split size information.
  • the number of data of the correction data may be calculated by adding the number of correction value data and the number of correction information data.
  • the generating may include assigning a separate address so as to distinguish the correction section information, the information regarding whether to correct each RGB colour, and the screen split size information from the calculated correction value.
  • the display apparatus may process the correction data using one of a timing controller, a frame rate controller, a scaler, and separate hardware.
  • a correction data generating apparatus includes a detector configured to detect brightness of a display panel of a display apparatus, a determination device configured to determine a non-uniform area of the display panel for each RGB colour based on the detected brightness, a correction data generator configured to generate correction data regarding the non-uniform area by determining a screen split size and a correction section for correcting an image quality of the display panel based on the non-uniform area, and a storage configured to store the generated correction data in a storage of the display apparatus, wherein the display apparatus corrects an image quality of the display panel based on the correction data.
  • the correction data generator is configured to determine whether to correct each RGB colour based the non-uniform area determined for each RGB colour.
  • the correction data generator is configured to determine a correction section for each colour where the correction is required when a correction for a plurality of colours is required.
  • the correction data generator is configured to calculate a correction value for each correction section based on the determined screen split size, and generate correction data including the calculated correction value and correction information, and the correction information may include at least one of the correction section information, the information regarding whether to correct each RGB colour, and the screen split size information.
  • the number of data of the correction data may be calculated by adding the number of correction value data and the number of correction information data.
  • the correction data generator may assign a separate address so as to distinguish the correction section information, the information regarding whether to correct each RGB colour, and the screen split size information from the calculated correction value.
  • the display apparatus may process the correction data using one of a timing controller, a frame rate controller, a scaler, and separate hardware.
  • An image quality correction system includes a correction data generating apparatus configured to detect brightness of a display panel, determine a non-uniform area of the display panel for each RGB colour based on the detected brightness, determine a screen split size and a correction section to correct image quality of the display panel based on the non-uniform area, and generate correction data regarding the non-uniform area and a display apparatus configured to store the generated correction data and process an image of the non-uniform area from among input images based on the correction data.
  • relational terms such as first and second, and the like, may be used to distinguish one entity from another entity, without necessarily implying any actual relationship or order between such entities.
  • FIG. 1 is a block diagram illustrating the configuration of a correction data generating apparatus 100 according to an exemplary embodiment.
  • the correction data generating apparatus 100 includes a detector 110, a determination device 120, a correction data generator 130, and a storage 140.
  • the detector 110 detects brightness of a display panel included in a display apparatus.
  • the detector 110 may detect brightness by changing an input image of a display panel from a low gradation to a high gradation or from a high gradation to a low gradation with reference to a white colour.
  • the detector 110 may detect brightness regarding an input image having a plurality of colours (for example, red, green, blue, etc.) of a display panel.
  • the determination device 120 may detect a non-uniform area of the display panel based on the detected brightness. In this case, the determination device 120 may determine n non-uniform area regarding a single colour (for example, white), but this is only an example. The determination device 120 may determine a non-uniform area regarding each of a plurality of RGB colours.
  • the non-uniform area of a display panel refers to an area where an image which is different from what is to be represented by the display panel is output.
  • the non-uniform area of a display panel may be a pixel line 210 which is output in different brightness from that of other pixel lines as illustrated in FIG. 2A .
  • the non-uniform area of a display panel may be an area 220 in the form of a block in a longitudinal direction where an image is output in different brightness from that of pixels in other areas with respect to a specific colour as illustrated in FIG. 2B .
  • the non-uniform area of a display panel may be areas 230-1 and 230-2 in the form of block in a forward direction where an image is output in different brightness from that of pixels in other areas as illustrated in FIG. 2C .
  • the first area 230-1 and the second area 230-2 may be non-uniform areas with respect to different colours.
  • the first area 230-1 may be n non-uniform area regarding green
  • the second area 230-2 may be n non-uniform area regarding red.
  • the non-uniform area of a display panel may be the entire area of a display panel of which colour is inclined to a specific colour (for example, red) as illustrated in FIG. 2D .
  • the correction data generator 130 generates correction data regarding the non-uniform area determined by the determination unit 120.
  • the correction data generator 130 may determine whether to correct n non-uniform area for each of a plurality of colours. In this case, if a display panel outputs an image in a single colour (for example, a white image), the correction data generator 130 may determine whether the display panel outputs colours other than the single colour, and determine whether to make a correction for each of a plurality of colours. For example, if a display panel outputs a white image, the first area of the display panel outputs green colour, and the second area of the display panel outputs red colour, the correction data generator 130 may determine that a correction regarding the green colour is required in the first area of the display panel, and a correction regarding the red colour is required in the second area of the display panel.
  • the correction data generator 130 may determine whether a non-uniform area exists in the image where each colour is output, and determine whether to make a correction for a plurality of colours. For example, if a display panel outputs a red image, and another colour is output in the red image, the correction data generator 130 may determine that a correction is required.
  • the correction data generator 130 may determine a screen split size for screen correction to improve the image quality of the display panel. Specifically, the correction data generator 130 may determine a screen split size based on the size and shape of a non-uniform area. More specifically, the correction data generator 130 may determine a maximum area where a non-uniform area can be divided as a screen split size. For example, as illustrated in FIG. 2B , if there is a non-uniform area 220, the correction data generator 130 may determine a (1x3) size as the screen split size for screen correction. In another example, as illustrated in FIG.
  • the correction data generator 130 may determine a (2x2) size as the screen split size for screen correction. As described above, by determining a maximum area where a non-uniform area can be divided based on the size and shape of the non-uniform area as the screen split size for screen correction, correction data having the least amount of data can be generated.
  • the correction data generator 130 may also determine a correction section regarding a non-uniform area. In this case, the correction data generator 130 may determine a correction section having constant intervals. For example, the correction data generator 130 may determine a correction section having 8 sections with respect to 256 gradation. Alternatively, the correction data generator 130 may determine a correction section having inconsistent intervals. In this case, the correction data generator 130 may have a narrow correction section near the gradation where a non-uniform area occurs, and a wide correction section near the gradation where a non-uniform area does not occur.
  • the correction data generator 130 may set the intervals such that a narrow correction exists near 25 gradation and 230 gradation, and a wide correction section exists near the remaining gradations.
  • the correction data generator 130 may determine a correction value regarding a non-uniform area for each colour and correction section. Specifically, if a correction regarding a single colour is required, the correction data generator 130 may determine a correction value regarding a non-uniform area according to the correction section of the single colour. For example, if a non-uniform area occurs in the second correction section (for example, 20 graduation ⁇ 40 gradation) and the sixth correction section (for example, 100 gradation ⁇ 120 gradation) with regard to a white image, the correction data generator 130 may determine a correction value regarding the second correction section and the sixth correction section.
  • the correction data generator 130 may determine a correction value regarding a non-uniform area according to the correction section for each colour where a correction is required. For example, if a non-uniform area occurs in the first correction section (for example, 0 gradation ⁇ 15 gradation) and the seventh correction section (205 graduation ⁇ 215 gradation) with regard to a red image, and a non-uniform area occurs in the third correction section (55 gradation ⁇ 70 gradation) with regard to a green image, the correction data generator 130 may determine a correction value with regard to the first correction and the seventh correction section of the red image, and determine a correction value with regard to the third correction section of the green image.
  • the correction data generator 130 may determine a correction value such that the brightness and colour of a non-uniform area becomes the same as the brightness and colour of other areas. For example, if the output brightness of a non-uniform area in the first correction section is higher than the general brightness, the correction data generator 130 may determine a correction value to lower the output brightness of the first correction section. In another example, if a non-uniform area of the second correction section with regard to a white image is output in red colour, the correction data generator 130 may determine a correction value so that the second correction section regarding the white image is output in white colour.
  • the correction data generator 130 determines whether an output screen is even by applying a correction value. If the screen output by applying a correction value is even, the correction data generator 130 may generate correction data including the correction value and correction information. In this case, the correction information may include at least one of a correction section, whether a correction is performed for each RGB colour, and a screen split size. If the screen output by applying a correction value is not even, the correction data generator 130 may generate a correction value again by performing the above-described operations. In this case, the correction data generator 130 may repeat the above-described operations until an even screen is output.
  • the storage 140 stores generated correction data.
  • the generated correction data may include a correction value and correction information as described above. Accordingly, the number of data stored in the correction data may be calculated by adding the number of correction value data and the number of correction information data.
  • the number of correction value data can be calculated by Equation 1 as shown below.
  • H p and V p refer to the number of horizontal pixels and vertical pixels of the display panel, respectively, H blocksize and V blocksize refer to the number of horizontal pixels and vertical pixels of the screen split area for correction, P n refers to the number of correction sections, and whether to R whether to correct, G whether to correct and B whether to correct may be whether to correct each RGB colour.
  • the number of correction information data may be calculated by Equation 2 as shown below.
  • the correction information data included in the correction data is stored in a predetermined specific address to be distinguished from the correction value data, and the number of correction data and the address for each correction section may be set to correspond to the correction information data.
  • the generated correction data may be stored in a display apparatus controlling the display panel, and the display apparatus may correct and output the RGB colours of an image using the correction data.
  • the display apparatus may process correction data using one of a timing controller, a frame rate controller, a scaler, and separate hardware, which will be described with reference to FIGS. 3A to 3C .
  • FIG. 3A is a view provided to explain an exemplary embodiment where a timing controller processes correction data according to the first exemplary embodiment.
  • the first storage 311 stores correction data.
  • the first storage 311 may be realized as a permanent storage apparatus.
  • the first storage 311 may be realized as one of a flash memory and EEPROM.
  • a data loader 312 of a timing controller 310 may load correction data, and classify the correction data as correction value data and correction information data based on a predetermined address.
  • the data loader 312 may output the correction value data to the second storage 313, and output the correction information data to a correction information decoder 315.
  • the second storage 313 may be realized as a temporary storage apparatus.
  • the second storage 313 may be realized as double data rate synchronous (DDR) or EDRAM.
  • the second storage 313 may output the correction value data to the third storage 314 which is a storage space for operation, prior to performing operation of correction coefficient.
  • the correction value data may be stored in the second storage 313 temporarily and then, output to the third storage 314 is only an example.
  • the correction value data may be output to the third storage 314 directly from the data loader 312.
  • the correction information decoder 315 may decode the correction information data, and output information regarding a correction section, information regarding whether to make a correction for each RGB colour, and information regarding a screen split size to an operation unit 316.
  • the operation device 316 included in the timing controller 310 may calculate a correction coefficient regarding a non-uniform area using the correction value data output from the third storage 314, information regarding the correction section output from the correction information decoder 315, information regarding whether to make a correction for each RGB colour, and information regarding the screen split size for correction.
  • a correction device 317 included in the timing controller 310 performs a correction job using the correction coefficient calculated by the operation device 316 and the RGB data processed by an external image processor.
  • the timing controller 310 may output image data using the corrected RGB data.
  • FIG. 3B is a view provided to explain an exemplary embodiment where the image processor 320 processes correction data according to the second exemplary embodiment.
  • the image processor 320 may be an apparatus for image-processing, such as a Frame Rate Controller (FRC) or a scaler.
  • FRC Frame Rate Controller
  • the first storage 321 stores correction data.
  • the first storage 321 may be realized as a permanent storage apparatus.
  • the first storage 321 may be realized as one of a flash memory and EEPROM.
  • a data loader 322 of the image processor 320 may load correction data and classify it into correction value data and correction information data based on a predetermined address.
  • the data loader 322 may output the correction value data to the second storage 323, and output the correction information data to a correction information decoder 325.
  • the second storage 323 may be realized as a temporary storage apparatus.
  • the second storage 323 may be realized as DDR or EDRAM.
  • the second storage 323 may output the correction value data to the third storage 324 which is a storage space for operation prior to performing an operation of a correction coefficient.
  • the feature of storing the correction value data in the second storage 323 temporarily and outputting the data to the third storage 324 is only an example.
  • the correction value data may be output to the third storage 324 directly from the data loader 322.
  • the correction information decoder 325 may decode the correction information data and output information regarding a correction section, information regarding whether to make a correction for each RGB colour, and information regarding a screen split size for correction to an operation device 326, respectively.
  • the operation device 326 included in the image processor 320 may calculate a correction coefficient regarding an non-uniform area by using the correction value data output from the third storage 324, information regarding a correction section output from the correction information decoder 325, information regarding whether to make a correction for each RGB colour, and information regarding a screen split size for correction.
  • a correction device included in the image processor 320 performs a correction by using the correction coefficient calculated by the operation device 325 and the input RGB data.
  • the image processor 320 may output the corrected RGB data to a timing controller.
  • FIG. 3C is a view provided to explain an exemplary embodiment where separate hardware 330 for colour correction processes correction data according to the third exemplary embodiment.
  • the first storage 331 stores correction data.
  • the first storage 331 may be realized as a permanent storage apparatus.
  • the first storage 331 may be realized as one of a flash memory and EEPROM.
  • a data loader 332 of the colour correction hardware may load correction data and classify the data into correction value data and correction information data based on a predetermined address.
  • the data loader 332 may output the correction value data to the second storage 333, and output the correction information data to the correction information decoder 334.
  • the second storage 333 may be realized as a temporary storage apparatus.
  • the second storage 333 may be realized as DDR or EDRAM.
  • the second storage 333 may output correction value data to the third storage 335 which is a storage space for operation prior to performing an operation of a correction coefficient.
  • the feature of storing the correction value data in the second storage 333 temporarily and outputting the data to the third storage 335 is only an example.
  • the correction value data may be output to the third storage 335 directly from the data loader 332.
  • the correction information decoder 334 may decode the correction information data and output information regarding a correction section, information regarding whether to make a correction for each RGB colour, and information regarding a screen split size for correction to the operation device 336, respectively.
  • the operation device 336 included in the colour correction hardware 330 may calculate a correction coefficient regarding a non-uniform area by using the correction value data output from the third storage 335, information regarding a correction section output from the correction information decoder 334, and information regarding whether to make a correction for each RGB colour, and information regarding a screen split size for correction.
  • a correction device 337 included in the colour correction hardware 330 performs a correction by using the correction coefficient calculated by the operation device 336 and the RGB data input from an image processor (for example, FRC or a scaler).
  • the colour correction hardware 330 may output the corrected RGB data to a timing controller.
  • the display apparatus 300 may perform a colour correction regarding a non-uniform area.
  • FIG. 4 is a flowchart provided to explain a method of generating correction data according to an exemplary embodiment.
  • the correction data generating apparatus 100 detects brightness of a display panel (operation S410). Specifically, the correction data generating apparatus 100 may detect the brightness by varying an input image of the display panel from low gradation to high gradation or from high graduation to low gradation with reference to a white colour. In addition, the correction data generating apparatus 100 may detect brightness regarding an input image having a plurality of colours (for example, red, green, blue, etc.) of the display panel.
  • a plurality of colours for example, red, green, blue, etc.
  • the correction data generating apparatus 100 determines a non-uniform area based on the detected brightness (operation S420).
  • the correction data generating apparatus 100 may determine a non-uniform area with regard to a single colour (for example, white), but this is only an example.
  • the correction data generating apparatus 100 may determine a non-uniform area with regard to each of the plurality of RGB colours.
  • the correction data generating apparatus 100 generates correction data regarding a non-uniform area (operation S430), which will be described with reference to FIG. 5 .
  • the correction data generating apparatus 100 determines whether to make a correction for each RGB colour (operation S510).
  • the correction data generating apparatus 100 determines a screen split size for correction (operation S520).
  • the correction data generating apparatus 100 may determine a screen split size for correction to be a maximum size in which an non-uniform area is divided based on the size and shape of the non-uniform area.
  • the correction data generating apparatus 100 determines a correction section for each colour (operation S530). In this case, the correction data generating apparatus 100 may determine a correction section based on the number of gradation where a non-uniform area occurs.
  • the correction data generating apparatus 100 determines a correction value of a non-uniform area for each colour and correction section (operation S540).
  • the correction data generating apparatus 100 determines again whether the display panel screen which is corrected according to the correction value is even (operation S550).
  • the correction data generating apparatus 100 If the corrected screen is even (operation S550-Y), the correction data generating apparatus 100 generates correction data including a correction value and correction information (operation S560).
  • the correction information may include information regarding whether a correction is performed for each RGB colour, information regarding a screen split size for correction, and information regarding a correction section. If the corrected screen is not even (operation S550-N), the correction data generating apparatus 100 may go back to operation S510 and perform a correction again.
  • the correction data generating apparatus 100 stores the generated correction data (operation S440).
  • the evenness of the image quality of the display panel can be improved and thus, even image quality can be achieved in any area of the display panel.
  • a correction method can be determined in consideration of the characteristics of the display panel, thereby reducing the time for generating data for correction and thus, minimizing the production cost.
  • a program code for performing a correction data generating method can be stored in a non-transitory computer readable medium.
  • the non-transitory computer readable medium refers to a medium which may store data semi-permanently rather than storing data for a short time such as a register, a cache, and a memory and may be readable by an apparatus.
  • the non-transitory recordable medium may be CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, etc.
  • a correction data generating apparatus a method of generating correction data, and an image quality correction system are provided.
  • the method of generating correction data includes detecting brightness of a display panel, determining an non-uniform area of the display panel for each RGB colour based on the detected brightness, generating correction data regarding the non-uniform area by determining a screen split size and a correction section for correcting an image quality of the display panel based on the non-uniform area, and storing the generated correction data.
  • the correction data is stored in a storage of a display apparatus controlling the display panel, and the display apparatus corrects an image quality of the display panel using the correction data.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
EP14194920.6A 2013-11-28 2014-11-26 Appareil et procédé pour générer des données de correction et son système de correction de qualité d'image Ceased EP2879123A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20130146058 2013-11-28
KR1020140043722A KR101561871B1 (ko) 2013-11-28 2014-04-11 보정 데이터 생성 장치 및 이의 보정 데이터 생성 방법, 그리고 화질 보정 시스템

Publications (2)

Publication Number Publication Date
EP2879123A2 true EP2879123A2 (fr) 2015-06-03
EP2879123A3 EP2879123A3 (fr) 2015-11-25

Family

ID=52102398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14194920.6A Ceased EP2879123A3 (fr) 2013-11-28 2014-11-26 Appareil et procédé pour générer des données de correction et son système de correction de qualité d'image

Country Status (2)

Country Link
US (1) US9898998B2 (fr)
EP (1) EP2879123A3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10134348B2 (en) * 2015-09-30 2018-11-20 Apple Inc. White point correction
CN105957490B (zh) * 2016-07-13 2019-03-01 武汉华星光电技术有限公司 驱动电路及具有该驱动电路的液晶显示器
EP3276602A1 (fr) * 2016-07-27 2018-01-31 Advanced Digital Broadcast S.A. Procédé et système permettant d'étalonner un écran d'affichage
CN108550341B (zh) * 2018-05-31 2021-01-15 联想(北京)有限公司 一种显示设备及显示方法
CN112669758B (zh) * 2019-09-29 2023-11-14 西安诺瓦星云科技股份有限公司 显示屏校正方法、装置、系统和计算机可读存储介质
CN110827785B (zh) * 2019-11-27 2021-04-02 Oppo广东移动通信有限公司 亮度调节方法及相关产品
US10943530B1 (en) * 2020-02-24 2021-03-09 Himax Technologies Limited Mura compensation method and apparatus for OLED display and electronic device
KR20250006528A (ko) 2023-07-04 2025-01-13 삼성전자주식회사 무라 보상 데이터 생성 장치 및 그것의 동작 방법, 그리고 디스플레이 패널의 무라를 보상하는 디스플레이 구동 회로

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080049051A1 (en) * 2006-07-28 2008-02-28 Han Sang C Method of controlling picture quality in flat panel display

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101136286B1 (ko) * 2005-10-17 2012-04-19 엘지디스플레이 주식회사 평판표시장치 및 그 화질제어방법
KR101137856B1 (ko) 2005-10-25 2012-04-20 엘지디스플레이 주식회사 평판표시장치 및 그 화질제어방법
KR101182327B1 (ko) * 2006-06-29 2012-09-24 엘지디스플레이 주식회사 평판표시장치와 그 화질제어 방법
US8199074B2 (en) * 2006-08-11 2012-06-12 Chimei Innolux Corporation System and method for reducing mura defects
US8391585B2 (en) * 2006-12-28 2013-03-05 Sharp Kabushiki Kaisha Defect detecting device, defect detecting method, image sensor device, image sensor module, defect detecting program, and computer-readable recording medium
KR101319341B1 (ko) * 2008-08-26 2013-10-16 엘지디스플레이 주식회사 영상 표시 장치의 결함 보상 영역 생성 방법
JP5174837B2 (ja) 2010-02-01 2013-04-03 シャープ株式会社 表示装置、輝度ムラ補正方法、補正データ作成装置、および補正データ作成方法
KR101929001B1 (ko) 2012-02-03 2018-12-14 삼성디스플레이 주식회사 표시 패널의 얼룩 보상 방법, 이를 포함하는 표시 패널의 구동 방법 및 이를 수행하기 위한 표시 장치

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080049051A1 (en) * 2006-07-28 2008-02-28 Han Sang C Method of controlling picture quality in flat panel display

Also Published As

Publication number Publication date
US20150145841A1 (en) 2015-05-28
US9898998B2 (en) 2018-02-20
EP2879123A3 (fr) 2015-11-25

Similar Documents

Publication Publication Date Title
EP2879123A2 (fr) Appareil et procédé pour générer des données de correction et son système de correction de qualité d'image
US10249264B2 (en) Controller for compensating mura defects, display apparatus having the same, and method for compensating mura defects
CN107799081B (zh) Gamma校正系统及其校正方法
US9368055B2 (en) Display device and driving method thereof for improving side visibility
WO2018214414A1 (fr) Procédé de réduction de luminosité d'images, appareil de traitement de données, et appareil d'affichage
US8223176B2 (en) Display device and method of driving the same
KR102307501B1 (ko) 광학 보상 시스템 및 광학 보상 방법
US20110248975A1 (en) Image display apparatus and image displaying method
US10354165B2 (en) Apparatus for detecting afterimage candidate region and apparatus including the same for preventing afterimage
EP2503539B1 (fr) Appareil d'affichage à cristaux liquides
US20160165198A1 (en) Image displaying system, controlling method of image displaying system, and storage medium
KR20180074407A (ko) 디스플레이 장치 및 그 제어 방법
US20140354710A1 (en) Display device and method of driving the same
EP3029663A1 (fr) Procédé de compensation d'un d'un défaut ponctuel dans un panneau d'affichage, et appareil pour executer ce procédé
CN106446908A (zh) 图像中目标检测方法及装置
EP2811481B1 (fr) Dispositif de commande d'affichage vidéo
EP1447788A1 (fr) Unite de commande d'affichage, affichage d'images et procede de transfert de donnees de commande
EP3550508A1 (fr) Système et procédé d'extension de plage dynamique d'une image numérique, et support d'informations
JP2015103174A (ja) 画像処理装置、コンピュータプログラム及び画像処理方法
JP2015231140A (ja) 画像処理装置、画像処理方法、及び、プログラム
US9292912B2 (en) Display apparatus and method for image output thereof
KR101561871B1 (ko) 보정 데이터 생성 장치 및 이의 보정 데이터 생성 방법, 그리고 화질 보정 시스템
US20170061899A1 (en) Image display apparatus, image-processing apparatus, method of controlling image display apparatus, and method of controlling image-processing apparatus
US9805480B2 (en) Method of correcting color brightness of image, of display apparatus, and apparatus for correcting color brightness in the display of image
US20060017745A1 (en) Apparatus and method for rendering image, and computer-readable recording media for storing computer program controlling the apparatus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20141126

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: G09G 3/20 20060101AFI20151022BHEP

Ipc: G09G 3/00 20060101ALI20151022BHEP

R17P Request for examination filed (corrected)

Effective date: 20160519

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20161125

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 20190619